diff --git a/syslinux.inc b/syslinux.inc
index a62f4c9..321514a 100644
--- a/syslinux.inc
+++ b/syslinux.inc
@@ -48,6 +48,8 @@ function install_syslinux()
 
     dd bs=440 count=1 conv=notrunc \
         if=/usr/lib/syslinux/mbr/gptmbr.bin of="$drive"
+    sync
+    sleep 5
 
     mount_efi "$drive"